Oak Park Terrace takes RVs and costs $450 month. Seasonal rates would be slightly less per month. Oak Park Terrace || RV
Viking Village in Stoughton is nice but will cost $685 a month for full hookups. Home Page
There are many places around 30 miles of Madison, Pardeeville, Lodi, Edgerton, Milton, etc.
The Dane County Parks campgrounds are very good with on-site electrical hookups, and potable water and dump stations in the park. Here are the campgrounds so equipped:
If you can pick up and move every fourteen days, and move to get water and dump when needed, those would be possibilities.
2013 Leisure Travel Vans Unity U24MB, 635 watts solar, 440 AH batteries, 2000 watt inverter, Koni struts and shocks, Hellwig rear anti-swaybar, SumoSprings front and back, 2012 Hyundai Accent SE, Blue Ox baseplates, Aladdin towbar and Patriot